Improvement in characterizing the pertechnetate brain scan.
D001932:Brain Neoplasms / Q000175:diagnosis*; D007839:Functional Laterality; D006801:Humans; D011868:Radioisotopes; D011877:Radionuclide Imaging; D013667:Technetium
D011868:Radioisotopes; D013667:Technetium